Re: [PATCH v4] staging: gdm724x: Fix DMA from stack

On Thu, Feb 11, 2021 at 01:28:41PM +0000, David Laight wrote:

quoted

Stack allocated buffers cannot be used for DMA
on all architectures so allocate hci_packet buffer
using kmalloc.

I wonder if the usb stack ought/could support a short bounce
buffer within the memory is already has to allocate?

No.